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Search: id:A103390
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| A103390 |
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Natural numbers but with nonprimes squared. |
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+0
3
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| 0, 1, 2, 3, 16, 5, 36, 7, 64, 81, 100, 11, 144, 13, 196, 225, 256, 17, 324, 19, 400, 441, 484, 23, 576, 625, 676, 729, 784, 29, 900, 31, 1024, 1089, 1156, 1225, 1296, 37, 1444, 1521, 1600, 41, 1764, 43, 1936, 2025, 2116, 47, 2304, 2401, 2500, 2601, 2704, 53
(list; graph; listen)
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OFFSET
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1,3
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LINKS
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Peter Alfeld, The 1,000 smallest prime numbers .
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EXAMPLE
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4 is not a prime, so it is squared.
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MATHEMATICA
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Table[ If[ PrimeQ[n], n, n^2], {n, 0, 54}] (from Robert G. Wilson v Mar 24 2005)
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CROSSREFS
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Cf. A103164.
Adjacent sequences: A103387 A103388 A103389 this_sequence A103391 A103392 A103393
Sequence in context: A070973 A054496 A088447 this_sequence A128537 A066841 A074270
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KEYWORD
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easy,nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Mar 20 2005
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 24 2005
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